package com.aishua.fire.common;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class QrcodeUtils {

	private static final int QRCOLOR = 0xFF000000; // 默认是黑色
	private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色

	/**
	 * 生成带logo的二维码图片
	 * 
	 * @param qrUrl
	 *            要写入的url地址
	 * @param writeText
	 *            要写于的文字
	 * @param logoPath
	 *            二维码生成的路径
	 * @param picName
	 *            生成图片名字
	 * @return
	 */
	public static String getLogoQRCode(String qrUrl, String writeText, String logoPath, String picName) {

		try {
			QrcodeUtils qr = new QrcodeUtils();
			// 绘制生成二维码图片 bim生成出的二维码图片
			BufferedImage bim = qr.getQR_CODEBufferedImage(qrUrl, BarcodeFormat.QR_CODE, 400, 400,
					qr.getDecodeHintType());
			// 绘制生成带有logo与文字的二维码图片 new LogoConfig()为logo的参数设置
			return qr.addLogo_QRCode(bim, new LogoConfig(), writeText, picName, logoPath);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 生成二维码bufferedImage图片
	 * 
	 * @param content
	 *            编码内容
	 * @param barcodeFormat
	 *            编码类型
	 * @param width
	 *            图片宽度
	 * @param height
	 *            图片高度
	 * @param hints
	 *            设置参数
	 * @return
	 */
	public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height,
			Map<EncodeHintType, ?> hints) {
		MultiFormatWriter multiFormatWriter = null;
		BitMatrix bm = null;
		BufferedImage image = null;
		try {
			multiFormatWriter = new MultiFormatWriter();
			// 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
			bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
			int w = bm.getWidth();
			int h = bm.getHeight();
			image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

			// 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
			for (int x = 0; x < w; x++) {
				for (int y = 0; y < h; y++) {
					image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
				}
			}
		} catch (WriterException e) {
			e.printStackTrace();
		}
		return image;
	}

	/**
	 * 设置二维码的格式参数
	 * 
	 * @return
	 */
	public Map<EncodeHintType, Object> getDecodeHintType() {
		// 用于设置QR二维码参数
		Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
		// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
		// 设置编码方式
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, 0);
		hints.put(EncodeHintType.MAX_SIZE, 350);
		hints.put(EncodeHintType.MIN_SIZE, 100);
		return hints;
	}

	/**
	 * 
	 * @param bim
	 *            已经生成好原生的二维码图片无logo
	 * @param logoConfig
	 *            logo的基本参数
	 * @param writeText
	 *            要输入的文字
	 * @param picName
	 *            图片名字
	 * @param logoPath
	 *            二维码生成的路径
	 * @return
	 */
	public String addLogo_QRCode(BufferedImage bim, LogoConfig logoConfig, String writeText, String picName,
			String logoPath) {
		try {
			/**
			 * 读取二维码图片，并构建绘图对象
			 */
			BufferedImage image = bim;
			Graphics2D g = image.createGraphics();
			g.dispose();
			// 把商品名称添加上去，商品名称不要太长，这里最多支持两行。太长就会自动截取
			if (writeText != null && !writeText.equals("")) {
				// 新的图片，把带logo的二维码下面加上文字
				BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
				Graphics2D outg = outImage.createGraphics();
				// 画二维码到新的面板
				outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
				// 画文字到新的面板
				outg.setColor(Color.BLACK);
				outg.setFont(new Font("宋体", Font.BOLD, 24)); // 字体、字型、字号
				int strStartIndex = writeText.indexOf("/");
				String devicesName = writeText.substring(0, strStartIndex);
				String devicesId = writeText.substring(strStartIndex + 1);
				int strWidth1 = outg.getFontMetrics().stringWidth(devicesName);
				int strWidth2 = outg.getFontMetrics().stringWidth(devicesId);
				outg.drawString(devicesName, 200 - strWidth1 / 2,
						image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
				BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
				Graphics2D outg2 = outImage2.createGraphics();
				outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
				outg2.setColor(Color.BLACK);
				outg2.setFont(new Font("宋体", Font.BOLD, 24)); // 字体、字型、字号
				outg2.drawString(devicesId, 200 - strWidth2 / 2,
						outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
				outg2.dispose();
				outImage2.flush();
				outImage = outImage2;
				outg.dispose();
				outImage.flush();
				image = outImage;
			}
			// 二维码生成的路径，
			mkdirs(logoPath);
			String picPath=logoPath  + picName;
			log.info("图片路径;{}",picPath);
			File filepath = new File(picPath);
			ImageIO.write(image, "png", filepath);
//			ImageToPdfUtil.createPdf(picPath,logoPath,picName);
		} catch (Exception e) {
			log.error("e", e);
		}
		return null;
	}

	public static void mkdirs(String destPath) {
		File file = new File(destPath);
		// 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
		if (!file.exists() && !file.isDirectory()) {
			file.mkdirs();
		}
	}

	public static String createQRCode(String url, String writeText, String logoPath,String devicesId) {
		String picName = devicesId + ".jpg";
		try {

			getLogoQRCode(url, writeText, logoPath, picName);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return picName;
	}
	
	
}
